Product Overview

The FANUC A06B-6110-H037 is an Alpha i series PSM-37i power supply module used in FANUC CNC servo and spindle drive systems. It converts three-phase 200–230/240 VAC input into a high-voltage DC bus for compatible Alpha i servo and spindle amplifiers. The unit is rated at approximately 43 kW and is designed for high-power CNC drive configurations. FANUC documentation identifies the H037 as the PSM-37i model within the 200 VAC-input power-supply family.

This module is typically installed upstream of multiple drive amplifiers, making it a critical component in the CNC power architecture. Replacement requires careful verification of input voltage, current rating, DC bus requirements, connected amplifier configuration, and hardware revision. It is especially relevant for maintaining older FANUC Alpha i installations where an exact-match spare can avoid a larger drive-system retrofit.

Technical Specifications — A06B-6110-H037

Published technical references consistently identify the unit as a 43 kW PSM-37i with a three-phase 200–230 VAC input and approximately 283–325 VDC output. Some supplier documentation lists the input as extending to 240 V and the corresponding DC output to 339 V, so the exact nameplate rating should be used for procurement and commissioning.

FANUC A06B-6110-H037

Key Features and Benefits — A06B-6110-H037

• 43 kW high-capacity power supply
• Three-phase 200 VAC-class input
• High-voltage DC bus output
• Designed for Alpha i servo and spindle amplifiers
• Suitable for FANUC CNC systems
• Forced-air cooling architecture
• Compatible with established Alpha i drive configurations
• Appropriate for legacy CNC MRO inventories

The H037 belongs to the Alpha i power-supply family and uses the A16B-2203-0632 power board according to FANUC drive documentation.

Related Models

FANUC A06B-6110-H026: Alpha i PSM-26i power supply with a lower power rating for smaller drive configurations.

FANUC A06B-6110-H030: Alpha i PSM-30i power supply used in compatible 200 VAC-class drive systems.

FANUC A06B-6110-H055: Higher-capacity Alpha i PSM-55i power supply for larger CNC drive architectures.

FANUC A06B-6120 Series: Alpha i high-voltage power-supply family designed for 400 VAC-class input applications.

Installation and Maintenance — A06B-6110-H037

Before replacement, record the CNC control model, connected servo/spindle amplifiers, input voltage, alarm history, DC bus condition, and power-supply revision. Isolate and discharge the DC bus according to FANUC service procedures before removing the module.

Inspect the cooling fans, DC-bus terminals, connectors, fuses, and cabinet ventilation. Fan failure and abnormal heat are important maintenance concerns; available service references identify cooling-fan and over-temperature alarms associated with this power-supply family.

Personally, I would inspect the complete drive power chain rather than replacing the PSM immediately after a fault. An upstream supply alarm can sometimes be the result of a downstream servo or spindle amplifier fault.

Product Warranty — A06B-6110-H037

Warranty coverage depends on supplier, equipment condition, and purchase agreement. For new-old-stock, surplus, or refurbished inventory, confirm the exact hardware revision, nameplate rating, internal board configuration, cooling-fan condition, load-test results, and warranty period before purchase.

The FANUC A06B-6110-H037 should be treated as an exact Alpha i PSM-37i replacement. Input voltage, 43 kW capacity, DC-bus requirements, connected amplifiers, and hardware revision should all be checked before commissioning.